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class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2020-10-17T14:50:03.000Z" title="发表于 2020-10-17 22:50:03">2020-10-17</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2021-01-10T12:28:01.860Z" title="更新于 2021-01-10 20:28:01">2021-01-10</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="/categories/%E5%89%8D%E7%AB%AF%E5%AD%A6%E4%B9%A0/">前端学习</a></span></div><div class="meta-secondline"> <span class="post-meta-separator">|</span><span class="post-meta-wordcount"><i class="far fa-file-word fa-fw post-meta-icon"></i><span class="post-meta-label">字数总计:</span><span class="word-count">1.4k</span><span class="post-meta-separator">|</span><i class="far fa-clock fa-fw post-meta-icon"></i><span class="post-meta-label">阅读时长:</span><span>5分钟</span></span><span class="post-meta-separator">|</span><span class="post-meta-pv-cv"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">阅读量:</span><span id="busuanzi_value_page_pv"></span></span></div></div></div></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><h1 id="组件的基本使用与样式："><a href="#组件的基本使用与样式：" class="headerlink" title="组件的基本使用与样式："></a>组件的基本使用与样式：</h1><blockquote>
<p>纯属随笔记录，具体详细教程，请查阅<a target="_blank" rel="noopener" href="https://uniapp.dcloud.io/">uni-app官方文档</a></p>
</blockquote>
<ul>
<li><p><code>uni-app</code>提供了丰富的基础组件给开发者，开发者可以像搭积木一样，组合各种组件拼接称自己的应用</p>
</li>
<li><p><code>uni-app</code>中的组件，就像 <code>HTML</code> 中的 <code>div</code> 、<code>p</code>、<code>span</code> 等标签的作用一样，用于搭建页面的基础结构</p>
</li>
<li><p>下面介绍的几个组件是常用的组件，<code>uni-app</code>相关组件很多，具体请看官方文档。</p>
</li>
<li><h2 id="text文本组件的用法"><a href="#text文本组件的用法" class="headerlink" title="text文本组件的用法:"></a>text文本组件的用法:</h2><ul>
<li><h3 id="text-组件的属性"><a href="#text-组件的属性" class="headerlink" title="text 组件的属性:"></a>text 组件的属性:</h3><table>
<thead>
<tr>
<th align="center">属性</th>
<th align="center">类型</th>
<th align="center">默认值</th>
<th align="center">必填</th>
<th align="center">说明</th>
</tr>
</thead>
<tbody><tr>
<td align="center">selectable</td>
<td align="center">boolean</td>
<td align="center">false</td>
<td align="center">否</td>
<td align="center">文本是否可选</td>
</tr>
<tr>
<td align="center">space</td>
<td align="center">string</td>
<td align="center"></td>
<td align="center">否</td>
<td align="center">显示连续空格，可选参数：<code>ensp</code>,<code>emsp</code>,<code>nbsp</code></td>
</tr>
<tr>
<td align="center">decode</td>
<td align="center">boolean</td>
<td align="center">false</td>
<td align="center">否</td>
<td align="center">是否解码</td>
</tr>
</tbody></table>
<ul>
<li><code>text</code> 组件相当于行内标签、在同一行显示</li>
<li>除了文本节点以外的其他节点都无法长按选中</li>
</ul>
<h4 id="代码案例："><a href="#代码案例：" class="headerlink" title="代码案例："></a>代码案例：</h4><figure class="highlight plain"><table><tr><td class="code"><pre><span class="line">&lt;view&gt;</span><br><span class="line">  &lt;!-- 长按文本是否可选 --&gt;</span><br><span class="line">  &lt;text selectable&#x3D;&#39;true&#39;&gt;来了老弟&lt;&#x2F;text&gt;</span><br><span class="line">&lt;&#x2F;view&gt;</span><br><span class="line"></span><br><span class="line">&lt;view&gt;</span><br><span class="line">  &lt;!-- 显示连续空格的方式 --&gt;</span><br><span class="line">  &lt;view&gt;</span><br><span class="line">    &lt;text space&#x3D;&#39;ensp&#39;&gt;来了  老弟&lt;&#x2F;text&gt;</span><br><span class="line">  &lt;&#x2F;view&gt;</span><br><span class="line">  &lt;view&gt;</span><br><span class="line">    &lt;text space&#x3D;&#39;emsp&#39;&gt;来了  老弟&lt;&#x2F;text&gt;</span><br><span class="line">  &lt;&#x2F;view&gt;</span><br><span class="line">  &lt;view&gt;</span><br><span class="line">    &lt;text space&#x3D;&#39;nbsp&#39;&gt;来了  老弟&lt;&#x2F;text&gt;</span><br><span class="line">  &lt;&#x2F;view&gt;</span><br><span class="line">&lt;&#x2F;view&gt;</span><br><span class="line"></span><br><span class="line">&lt;view&gt;</span><br><span class="line">  &lt;text&gt;skyblue&lt;&#x2F;text&gt;</span><br><span class="line">&lt;&#x2F;view&gt;</span><br><span class="line"></span><br><span class="line">&lt;view&gt;</span><br><span class="line">  &lt;!-- 是否解码 --&gt;</span><br><span class="line">  &lt;text decode&#x3D;&#39;true&#39;&gt;&amp;nbsp; &lt; &gt; &amp; &amp;apos; &amp;ensp; &amp;emsp;&lt;&#x2F;text&gt;</span><br><span class="line">&lt;&#x2F;view&gt;</span><br></pre></td></tr></table></figure>

</li>
</ul>
<hr>
</li>
<li><h2 id="view视图容器组件的用法"><a href="#view视图容器组件的用法" class="headerlink" title="view视图容器组件的用法:"></a>view视图容器组件的用法:</h2><blockquote>
<p>View 视图容器， 类似于 HTML 中的 div</p>
</blockquote>
<ul>
<li><h3 id="组件的属性"><a href="#组件的属性" class="headerlink" title="组件的属性:"></a>组件的属性:</h3><table>
<thead>
<tr>
<th align="center">属性</th>
<th align="center">类型</th>
<th align="center">默认值</th>
<th align="center">必填</th>
<th align="center">说明</th>
</tr>
</thead>
<tbody><tr>
<td align="center">hover-class</td>
<td align="center">string</td>
<td align="center">none</td>
<td align="center">否</td>
<td align="center">指定按下去的样式类。当<code>hover-class = none</code>时，没有点击态效果</td>
</tr>
<tr>
<td align="center">hover-stop-propagation</td>
<td align="center">boolean</td>
<td align="center">false</td>
<td align="center">否</td>
<td align="center">指定是否阻止本节点的祖先节点出现击态</td>
</tr>
<tr>
<td align="center">hover-start-time</td>
<td align="center">number</td>
<td align="center">50</td>
<td align="center">否</td>
<td align="center">按住后多久出现点击态，单位毫秒</td>
</tr>
<tr>
<td align="center">hover-stay-time</td>
<td align="center">number</td>
<td align="center">400</td>
<td align="center">否</td>
<td align="center">手指松开后点击态保留时间，单位毫秒</td>
</tr>
</tbody></table>
<h4 id="代码案例：-1"><a href="#代码案例：-1" class="headerlink" title="代码案例："></a>代码案例：</h4><figure class="highlight plain"><table><tr><td class="code"><pre><span class="line">&lt;view class&#x3D;&quot;box2&quot; hover-class&#x3D;&quot;box2_active&quot;&gt;</span><br><span class="line">  &lt;view class&#x3D;&#39;box1&#39; hover-class&#x3D;&#39;active&#39; hover-stop-propagation :hover-start-time&#x3D;&quot;2000&quot; :hover-stay-time&#x3D;&#39;2000&#39;&gt;</span><br><span class="line"></span><br><span class="line">  &lt;&#x2F;view&gt;</span><br><span class="line">&lt;&#x2F;view&gt;</span><br></pre></td></tr></table></figure>

</li>
</ul>
<hr>
</li>
<li><h2 id="button按钮组件的用法"><a href="#button按钮组件的用法" class="headerlink" title="button按钮组件的用法:"></a>button按钮组件的用法:</h2><ul>
<li><h3 id="组件的属性-1"><a href="#组件的属性-1" class="headerlink" title="组件的属性:"></a>组件的属性:</h3><table>
<thead>
<tr>
<th align="center">属性名</th>
<th align="center">类型</th>
<th align="center">默认值</th>
<th align="center">说明</th>
</tr>
</thead>
<tbody><tr>
<td align="center">size</td>
<td align="center">String</td>
<td align="center">default</td>
<td align="center">按钮大小</td>
</tr>
<tr>
<td align="center">type</td>
<td align="center">String</td>
<td align="center">default</td>
<td align="center">按钮的样式类型</td>
</tr>
<tr>
<td align="center">plain</td>
<td align="center">Boolean</td>
<td align="center">false</td>
<td align="center">按钮是否镂空，背景色透明</td>
</tr>
<tr>
<td align="center">disabled</td>
<td align="center">Boolean</td>
<td align="center">false</td>
<td align="center">按钮是否禁用</td>
</tr>
<tr>
<td align="center">loading</td>
<td align="center">Boolean</td>
<td align="center">false</td>
<td align="center">名称是否带loading图标</td>
</tr>
</tbody></table>
<ul>
<li><code>button</code> 组件默认独占一行，设置 <code>size</code> 为 <code>mini</code> 时可以在一行显示多个</li>
</ul>
<h4 id="案例代码："><a href="#案例代码：" class="headerlink" title="案例代码："></a>案例代码：</h4><figure class="highlight plain"><table><tr><td class="code"><pre><span class="line">&lt;button size&#x3D;&#39;mini&#39; type&#x3D;&#39;primary&#39;&gt;前端&lt;&#x2F;button&gt;</span><br><span class="line"></span><br><span class="line">&lt;button size&#x3D;&#39;mini&#39; type&#x3D;&#39;default&#39; disabled&#x3D;&#39;true&#39;&gt;前端&lt;&#x2F;button&gt;</span><br><span class="line"></span><br><span class="line">&lt;button size&#x3D;&#39;mini&#39; type&#x3D;&#39;warn&#39; loading&#x3D;&#39;true&#39;&gt;前端&lt;&#x2F;button&gt;</span><br></pre></td></tr></table></figure>

</li>
</ul>
<hr>
</li>
<li><h2 id="image组件的使用"><a href="#image组件的使用" class="headerlink" title="image组件的使用:"></a>image组件的使用:</h2><blockquote>
<p>由于image属性较多，这里不详细介绍，可以查看官方文档<a target="_blank" rel="noopener" href="https://uniapp.dcloud.io/component/image?id=image">image文档</a></p>
</blockquote>
<ul>
<li><h3 id="组件的属性："><a href="#组件的属性：" class="headerlink" title="组件的属性："></a>组件的属性：</h3><table>
<thead>
<tr>
<th align="center">属性名</th>
<th align="center">类型</th>
<th align="center">默认值</th>
<th align="center">说明</th>
<th align="center">平台差异说明</th>
</tr>
</thead>
<tbody><tr>
<td align="center">src</td>
<td align="center">String</td>
<td align="center"></td>
<td align="center">图片资源地址</td>
<td align="center"></td>
</tr>
<tr>
<td align="center">mode</td>
<td align="center">String</td>
<td align="center"><code>scaleToFill</code></td>
<td align="center">图片裁剪，缩放的模式</td>
<td align="center"></td>
</tr>
</tbody></table>
<ul>
<li><code>&lt;image&gt;</code> 组件默认宽度 300px、高度 225px；<code>app-nvue平台，暂时默认为屏幕宽度</code></li>
<li><code>src</code> 仅支持相对路径、绝对路径，支持 base64 码；</li>
<li>页面结构复杂，css样式太多的情况，使用 image 可能导致样式生效较慢，出现 “闪一下” 的情况，此时设置 <code>image&#123;will-change: transform&#125;</code> ,可优化此问题。</li>
<li>自定义组件里面使用 <code>&lt;image&gt;</code>时，若 <code>src</code> 使用相对路径可能出现路径查找失败的情况，故建议使用绝对路径。</li>
<li>webp格式的图片在Android上是内置支持的。iOS上不同平台不一样，具体如下：app-vue下，iOS不支持；app-nvue下，iOS支持；微信小程序2.9.0起，iOS支持。</li>
<li>svg 格式的图片在不同的平台支持情况不同。具体为：app-nvue 不支持 svg 格式的图片，小程序上只支持网络地址。</li>
</ul>
</li>
</ul>
<hr>
</li>
<li><h2 id="uni-app中的样式："><a href="#uni-app中的样式：" class="headerlink" title="uni-app中的样式："></a>uni-app中的样式：</h2><ul>
<li><p>rpx 即<strong>响应式</strong>px，一种根据屏幕宽度自适应的动态单位。以750宽的屏幕为基准，750rpx恰好为屏幕宽度。屏幕变宽，rpx 实际显示效果会等比放大。</p>
</li>
<li><p>使用<code>@import</code>语句可以导入外联样式表，<code>@import</code>后跟需要导入的外联样式表的相对路径，用<code>;</code>表示语句结束</p>
</li>
<li><p>支持基本常用的选择器class、id、element等</p>
</li>
<li><p><strong>在 <code>uni-app</code> 中不能使用 <code>*</code> 选择器。</strong></p>
</li>
<li><p><code>page</code> 相当于 <code>body</code> 节点</p>
</li>
<li><p><strong>定义在 App.vue 中的样式为全局样式</strong>，作用于每一个页面。在 pages 目录下 的 vue 文件中定义的样式为局部样式，只作用在对应的页面，并会覆盖 App.vue 中相同的选择器。</p>
</li>
<li><p><code>uni-app</code> 支持使用字体图标，使用方式与普通 <code>web</code> 项目相同，需要注意以下几点：</p>
<ul>
<li><p>字体文件小于 40kb，<code>uni-app</code> 会自动将其转化为 base64 格式；</p>
</li>
<li><p>字体文件大于等于 40kb， 需开发者自己转换，否则使用将不生效；</p>
</li>
<li><p><strong>字体文件的引用路径推荐使用以 ~@ 开头的绝对路径。</strong></p>
<figure class="highlight css"><table><tr><td class="code"><pre><span class="line"><span class="keyword">@font-face</span> &#123;</span><br><span class="line">    <span class="attribute">font-family</span>: test1-icon;</span><br><span class="line">    <span class="attribute">src</span>: <span class="built_in">url</span>(<span class="string">&#x27;~@/static/iconfont.ttf&#x27;</span>);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>如何使用<code>scss</code>或者<code>less</code></p>
</li>
</ul>
</li>
</ul>
</li>
</ul>
<hr>
</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="mailto:undefined">六根清静</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="https://liugenqingjing2.coding.me/2020/10/17/uni-app%E5%BC%80%E5%8F%91-%E4%B8%89-%E7%BB%84%E4%BB%B6%E7%9A%84%E5%9F%BA%E6%9C%AC%E4%BD%BF%E7%94%A8/">https://liugenqingjing2.coding.me/2020/10/17/uni-app开发-三-组件的基本使用/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_blank">CC BY-NC-SA 4.0</a> 许可协议。转载请注明来自 <a href="https://liugenqingjing2.coding.me" target="_blank">小何blog (记录美好)</a>！</span></div></div><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" 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class="content"><a class="title" href="javascript:void(0)" @click="getnewsdata(index)" :title="news.title">{{news.title}}</a><time>{{news.postTime}}</time></div></div></div></div><div id="newsmodal"><button class="modalclose" @click="hidemodle()">关闭</button><h2>{{newpostvue.title}} </h2><h4>{{newpostvue.ptime}} &nbsp;&nbsp; {{newpostvue.source}}</h4><div v-html="newpostvue.content"></div></div></div></div><div class="card-widget card-shuo"><div class="card-content" style="height:auto;min-height:280px;"><div class="item-headline"><i class="fas fa-comments"></i><span>&#x8BF4;&#x8BF4</span><a id="shuovisualchange" style="cursor:pointer;float:right" onclick="shuovisualchange()">编辑</a></div><div id="artitalk_main" style="width:100%;height:100%;padding:10px"></div></div></div><div class="sticky_layout"></div><div class="card-widget card-history"><div class="card-content"><div class="item-headline"><i class="fas fa-paw fa-spin"></i><span>那年今日</span></div><div id="history-news" style="height: 100px;overflow: hidden;"><div id="history-card"></div></div></div></div><div class="card-widget card-announcement"><div class="card-content"><div class="item-headline"><i class="fas fa-bullhorn card-announcement-animation"></i><span>公告</span></div><div class="announcement_content">大学生一枚，软件工程，想做全栈攻城狮，哈哈，有兴趣可以加 QQ:484695754 (也可以点上面的logo)，一起交流学习</div></div></div><div class="sticky_layout"><div class="card-widget" id="card-toc"><div class="card-content"><div class="item-headline"><i class="fas fa-stream"></i><span>目录</span></div><div class="toc-content"><ol class="toc"><li class="toc-item toc-level-1"><a class="toc-link" href="#%E7%BB%84%E4%BB%B6%E7%9A%84%E5%9F%BA%E6%9C%AC%E4%BD%BF%E7%94%A8%E4%B8%8E%E6%A0%B7%E5%BC%8F%EF%BC%9A"><span class="toc-number">1.</span> <span class="toc-text">组件的基本使用与样式：</span></a><ol class="toc-child"><li class="toc-item toc-level-2"><a class="toc-link" href="#text%E6%96%87%E6%9C%AC%E7%BB%84%E4%BB%B6%E7%9A%84%E7%94%A8%E6%B3%95"><span class="toc-number">1.1.</span> <span class="toc-text">text文本组件的用法:</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#text-%E7%BB%84%E4%BB%B6%E7%9A%84%E5%B1%9E%E6%80%A7"><span class="toc-number">1.1.1.</span> <span class="toc-text">text 组件的属性:</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%BB%A3%E7%A0%81%E6%A1%88%E4%BE%8B%EF%BC%9A"><span class="toc-number">1.1.1.1.</span> <span class="toc-text">代码案例：</span></a></li></ol></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#view%E8%A7%86%E5%9B%BE%E5%AE%B9%E5%99%A8%E7%BB%84%E4%BB%B6%E7%9A%84%E7%94%A8%E6%B3%95"><span class="toc-number">1.2.</span> <span class="toc-text">view视图容器组件的用法:</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%BB%84%E4%BB%B6%E7%9A%84%E5%B1%9E%E6%80%A7"><span class="toc-number">1.2.1.</span> <span class="toc-text">组件的属性:</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#%E4%BB%A3%E7%A0%81%E6%A1%88%E4%BE%8B%EF%BC%9A-1"><span class="toc-number">1.2.1.1.</span> <span class="toc-text">代码案例：</span></a></li></ol></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#button%E6%8C%89%E9%92%AE%E7%BB%84%E4%BB%B6%E7%9A%84%E7%94%A8%E6%B3%95"><span class="toc-number">1.3.</span> <span class="toc-text">button按钮组件的用法:</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%BB%84%E4%BB%B6%E7%9A%84%E5%B1%9E%E6%80%A7-1"><span class="toc-number">1.3.1.</span> <span class="toc-text">组件的属性:</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#%E6%A1%88%E4%BE%8B%E4%BB%A3%E7%A0%81%EF%BC%9A"><span class="toc-number">1.3.1.1.</span> <span class="toc-text">案例代码：</span></a></li></ol></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#image%E7%BB%84%E4%BB%B6%E7%9A%84%E4%BD%BF%E7%94%A8"><span class="toc-number">1.4.</span> <span class="toc-text">image组件的使用:</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%BB%84%E4%BB%B6%E7%9A%84%E5%B1%9E%E6%80%A7%EF%BC%9A"><span class="toc-number">1.4.1.</span> <span class="toc-text">组件的属性：</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#uni-app%E4%B8%AD%E7%9A%84%E6%A0%B7%E5%BC%8F%EF%BC%9A"><span class="toc-number">1.5.</span> <span class="toc-text">uni-app中的样式：</span></a></li></ol></li></ol></div></div></div><div class="card-widget card-recent-post"><div class="card-content"><div class="item-headline"><i class="fas fa-history"></i><span>最新文章</span></div><div class="aside-list"><div class="aside-list-item"><a class="thumbnail" href="/2021/03/21/Node-js%E5%AD%A6%E4%B9%A0-%E4%BA%8C%E5%8D%81%E4%B8%89-%E8%B7%A8%E5%9F%9F%E4%BB%8B%E7%BB%8D%E5%92%8CJSONP%E4%BB%8B%E7%BB%8D/" title="Node.js学习(二十三.跨域介绍和JSONP介绍)"><img 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